An electrostatic discharge circuit
a technology of electrostatic discharge and circuit, applied in the direction of diodes, semiconductor devices, semiconductor/solid-state device details, etc., can solve the problems of serious problems with esd circuits, circuits operating below 8 v cannot be protected, and parts or total loss of normal functions, etc., to achieve better esd protection, improve esd protection, and improve the effect of esd protection
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[0021] The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
[0022] A preferred embodiment of the disclosed ESD circuit 200 is shown in FIG. 2A. The circuit 200 includes an NMOS transistor 202, a PMOS transistor 201, and an ESD zener diode 203. The source of the PMOS transistor 201 is coupled to a high voltage Vcc. The drain of the NMOS transistor 202 is simultaneously coupled to a circuit device terminal 204, the drain of the PMOS transistor 201, and the cathode of the ESD zener diode 203. The anode of the ESD zener diode 203 is coupled to the ground. When a normal positive voltage Vcc is imposed on the NMOS transistor 202 and the PMOS transistor 201, the NMOS transistor 202 and the PMOS transistor 201 are electrically coupled. However, if the transistor malfunctions or static electricity is produced, the high voltage is discharged via the E...
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